12112912013 has 2 divisors, whose sum is σ = 12112912014. Its totient is φ = 12112912012.

The previous prime is 12112912003. The next prime is 12112912061. The reversal of 12112912013 is 31021921121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12047916169 + 64995844 = 109763^2 + 8062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112912013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12112912013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12112912003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056456006 + 6056456007.

It is an arithmetic number, because the mean of its divisors is an integer number (6056456007).

Almost surely, 2^12112912013 is an apocalyptic number.

It is an amenable number.

12112912013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112912013 is an equidigital number, since it uses as much as digits as its factorization.

12112912013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 12112912013 in words is "twelve billion, one hundred twelve million, nine hundred twelve thousand, thirteen".